CN1347516A - Liquid-crystal display - Google Patents

Liquid-crystal display Download PDF

Info

Publication number
CN1347516A
CN1347516A CN00806194A CN00806194A CN1347516A CN 1347516 A CN1347516 A CN 1347516A CN 00806194 A CN00806194 A CN 00806194A CN 00806194 A CN00806194 A CN 00806194A CN 1347516 A CN1347516 A CN 1347516A
Authority
CN
China
Prior art keywords
liquid crystal
type
reflection
mentioned
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN00806194A
Other languages
Chinese (zh)
Inventor
中尾健次
熊川克彦
上村强
胁田尚英
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of CN1347516A publication Critical patent/CN1347516A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G02F1/133521—Interference filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

A liquid crystal display device having a back side light source, which can perform displays of both a transmissive type and a reflective type, employs interference filters formed with a multilayer film 18, 19 and 20 as color filters to be used for color display. The back side light source is switched off in use as a reflective type display. The display in the liquid crystal display device can be inverted to a negative. The normal direction of the multilayer film of the interference filter may differ from the normal direction of a substrate.

Description

Liquid crystal indicator
Technical field
The present invention relates to color filter and liquid crystal indicator (or element and display part), particularly relate to the display device that is used for the portable type information terminal, also relate to the display device of transmission, reflection dual-purpose type.
Background technology
(general background technology)
Liquid crystal indicator roughly is divided into transmission-type and reflection-type.
At first be transmission-type, but the transmission type colour liquid crystal display of using usually (display device) has used the absorption-type color filter.Its structure as shown in Figure 1.In this figure, the 11st, the light guide plate of reflector plate (not shown) etc. is set in the bottom.The 12nd, polaroid.The 14th, the substrate of background (a descending) side.The 15th, the substrate of front (on, operate the personnel place of seeing display surface simultaneously) side.The 17th, the polaroid of front one side.The 61st, R (redness) transmission absorption type (absorbing the wavelength except that red) color filter.The 62nd, G (green) transmission absorption type color filter.The 63rd, B (blueness) transmission absorption type color filter.The 21st, as sidelight or light source backlight.
But these each basic role, structure, materials partly all are so-called well-known technology.Therefore these generality explanation is omitted.And, except that above, in fact on any substrate, all being formed with the TFT (thin film transistor (TFT)) that pixel is used and pixel drive is used, upper and lower base plate is provided with nesa coating and alignment films towards the face of liquid crystal layer.But these also all are so-called well-known technology, more do not have direct relation with aim of the present invention.Therefore, omission is to the diagram and the explanation of these technology.
Below only just directly relevant with aim of the present invention in principle part and effect etc. describe.
Secondly, it is so-called white light source (comprising the light of all wavelengths that specific color is not had the ratio of obvious attention with human eye) the back side of liquid crystal panel configuration backlight.At this absorption-type color filter is set, according to the color of each pixel carrying, only makes the color of setting see through respectively this pixel, other colors then are absorbed.Carry out R, G, B demonstration of all kinds in view of the above.
, as use this kind absorption-type color filter, roughly 2/3 of glazing be absorbed, the ratio that is absorbed sometimes is higher, so the loss of light is high.Therefore, the someone propose to use interference filter replace the absorption-type color filter (for example: the spy open flat 11-38397 number, spy open flat 10-197859 number, specially be willing to flat 9-273042 number).Interference filter is that specific color sees through, and makes remaining light reflection.Then, will not need the light of color by this pixel reflects to light source one side, but because this light that is reflected is reflexed on the display surface once more by the reflector plate of light guide plate 11 bottoms etc., this reflected light is used to show once more.Its result has improved the utilization ratio of light, has reduced power consumption, and has improved brightness.
Te Kaiping 11-38397 number is exactly the example that is applied to reflective LCD element.Te Kaiping 10-197859 number is the mode that forms interference filter under color filter.The example backlight that special hope is to use interference filter to carry out color separated flat 9-273042 number.
Have, herein, interference filter generally forms with multilayer film again.But also the someone proposes to make cholesteryl liquid crystal to solidify the formed color filter type in back in recent years.(, please refer to " first page of exploitation of the 6th HLC achievement in research presentations with the color filter (Dai Nippon Printing's (strain) keeps Gu Dejiu) of cholesteryl liquid crystal " about this respect)
Next is a reflection-type, but the reflection type color liquid crystal display of using a lot usually (display device) is used the absorption-type reflector plate too.Its structure as shown in Figure 2, form reflector plate 71, have only the light of setpoint color to be reflected on the substrate at the liquid crystal panel back side, and sponge the light of other colors, only have those brightly the display setting color pixel make the light of these colors sheet that is reflected reflex to display surface one side (observer's one side), the light of other colors then is absorbed, and the pixel that shows brightly is not the pixel that circular polarizing disk and liquid crystal layer block (absorption) light.Have again, in the figure, then give identical symbol for parts same as shown in Figure 1 such as its effect, structure and part etc.And this also is the same with the liquid crystal indicator of aftermentioned embodiments of the invention.In addition, the symbol 71 of this figure is the reflector plate electrode of holding concurrently.
Have, because of with embodiment described later relation being arranged also, the spy gives record for caution's sake again, but the display of this type, transmitted light will be walked one back and forth at liquid crystal layer, just by 2 times, so that show.
In addition also have a kind of semi-transmission type liquid crystal display device, it is the intermediate form of reflection-type and transmission-type.Here it is is provided with half-reflecting mirror above or below the back substrate 14 of LCD shown in Figure 1, make transmittance to a certain degree, and makes light reflection to a certain degree.This type of liquid crystal display cells is in the time using AC power supplies, and as transmission-type, when use was battery-operated, as the reflection-type of power saving, the type was widely used in portable data assistance.
In addition, delivered the dual-purpose type (sharp99 news on April 1 is delivered) of reflection-type and transmission-type in recent years.This is with existing Semitransmissive improved type in addition, it is characterized in that reflector plate is implanted on part ground in pixel cell.
(background technology that the face of the problem that will solve from the present invention is seen)
But, in above liquid crystal display cells, luminance shortage.Because of being to utilize polarized light after all,, say in principle that the utilization ratio of light is also low to be reached about 1/2 even be white and black displays in liquid crystal indicator.
Particularly, because dual-purpose reflection-type and transmission-type, brightness further reduces.Briefly, for example, be 50% as the transmissivity of half-reflecting mirror, during then as transmission-type, only used 50% of backlight illumination, during as reflection-type, only used catoptrical 50%.As a result, no matter which kind of type all makes the utilization factor of light reduce by half.The situation that reflector plate is implanted in the pixel is identical therewith.(in fact, comparing when using transmission-type backlight and being used as reflection-type) because of its brightness can have surplus, so transmissivity is in the majority with discontented 50%.
In addition, because color filter uses is the light absorption type, thus have 2/3, sometimes even have more light to be provided with to be utilized.For this reason, when colour showed, the utilization ratio of light is low in principle to be reached about 1/6.If use the type of above-mentioned half-reflecting mirror, the utilization ratio of the light of not doing a good job has only 1/12 probably.
Adopting in the mode of interference filter, during from oblique seeing, can see that color changes as its equity.That is, because of interference filter forms by having periodic multilayer film etc., it reflects the wavelength corresponding with this thickness selectively.Therefore, during from oblique seeing, effective thickness of color filter increases, and transmission peak wavelength changes.
For this reason, no matter be transmission-type, reflection-type or the two dual-purpose type, particularly in the liquid crystal indicator that colour shows, people wish that power consumption is little and it is bright to show.
In addition, can not be because of watching the direction difference of display surface, color changes, and wishes that chromaticity is also good.
Disclosure of an invention
The present invention is a purpose to solve above problem, uses non-absorptive-type color filter type as color filter.
In addition, make the demonstration of carrying out reflection-type and transmission-type.
In addition, because of using, can cancel the back side light sources such as backlight, sidelight that separate with pixel portion as reflection-type.
In addition, use the interference filter type as non-absorption-type color filter.
In addition because modulating characteristic that liquid crystal layer had, in reflection-type pattern and transmission-type pattern, the thickness of liquid crystal that light passed through (by apart from) difference, no matter so the present invention in which kind of pattern, can both show bright, and contrast height.
In addition, color filter is that the normal direction of its multilayer film also tilts to the substrate normal direction with the film formed interference filter of multilayer.
Specific practice is as follows:
In invention 1, the colour of back side light sources such as intense light source backlight to having, that projection is used shows liquid crystal indicator (comprising the projection display), corresponding to sharing the display surface (projection display in this way, should be the face of the film that is used to show strictly speaking) triangle of each pixel, what inlay that the color filter of demonstration looks such as shape, bar shaped uses is not by means of scattering the existing color filter that pigment absorbs the light beyond the designated color in transparent resin, but make appointment the color transmission, make the non-absorption-type color filter (annotating: be not limited to three primary colors and show) of other colors reflections.
In other inventions, by the change display modes such as switching of switch, that is, and changeable one-tenth reflection-type and the dual-purpose liquid crystal indicator (display part that comprises as mentioned above, element and mancarried device) that switches to transmission-type.
In other inventions, because of using, so can adjust blocking (0) light quantity backlight as reflection-type.
In other inventions, non-absorptive-type color filter is the interfere type color filter that is made of multilayer film, the light of setpoint color such as transmits red only, and reflect the light of other complementary colors.
In other inventions, the look that carries out CMY with reflection-type shows that the look that carries out RGB with transmission-type shows.Therefore, the switching circuit etc. that also has setting.
In other inventions, all should become best demonstration corresponding to reflection-type and transmission-type, by operation TFT is reversed between Kai Heguan, can be inverted to the demonstration of minus.
In other inventions, the liquid crystal indicator that can carry out the switching of transmission-type and reflection-type display mode is when using as reflection-type, have that white shows and during colored the demonstration reflection from the incident light of display surface or reflection reflection of light device by the color of each pixel decision, and when using, have and make white light and by the light transmissive penetrating apparatus of the color of each pixel decision as transmission-type.
In other inventions, because of employed liquid crystalline type difference, with transmission-type with compare with reflection-type, show that the modulation voltage that used light makes its polarization angle change tails off by liquid crystal layer the time, in order to compensate this point, increased modulated voltage signal with transmission-type.
In other inventions, in order to thicken the liquid crystal layer of employed display light by part, the box of this part is thick will to be thickened as transmission-type.
In other inventions, when being used for transparent type,, improve modulation voltage, and will use the liquid crystal that increases modulation according to high voltage for strengthening its modulation voltage.
In other inventions,,, also just switched modulation to liquid crystal layer by switching display mode because the reflected light of reflection unit and the transmitted light of penetrating apparatus are the relation of complementary color.
In other inventions, reflection unit and penetrating apparatus are non-absorption-type, will use interference filter especially.
In other inventions, interference filter is made of multilayer film.And, in order not get muddled because of the difference of viewing angle makes colored the demonstration, when the observer watches the multi-layer film surface of each pixel will about on inferior direction form.
In other inventions, multilayer film has been used cholesteryl liquid crystal.
In other inventions, using the interference filter of cholesteryl liquid crystal is cholesteryl liquid crystal and high molecular complex.
In other inventions, though not dual-purpose reflection-type and transmission-type no matter be demonstration such as panchromatic or double-colored, monochrome in order to be used for, all will use non-absorption-type color filter.In addition, identical with the above-mentioned colony of respectively inventing, all to put in a lot of time and effort to this color filter.
The simple declaration of accompanying drawing
Fig. 1 is the sectional structure chart of existing transmission-type liquid crystal display element.
Fig. 2 is the sectional structure chart of existing reflection type liquid crystal display element.
Fig. 3 is the sectional structure chart as the liquid crystal display cells of the present invention the 1st embodiment.
Fig. 4 is the action principle figure of the liquid crystal display cells of the foregoing description when using as the transmittance type.
Fig. 5 is the action principle figure of the liquid crystal display cells of the foregoing description when using as the light reflection-type.
Fig. 6 is and the negative circuit theory diagrams that reverse interlock, back side light source is extinguished.
Fig. 7 is the sectional structure chart as the liquid crystal display cells of the present invention the 2nd embodiment.
Fig. 8 is driving voltage adjusting mechanism (circuit) synoptic diagram.
Fig. 9 is the interference filter structure principle chart as the present invention the 4th embodiment.
Figure 10 is to use the schematic diagram of the multilayer films interference color filter of cholesteryl liquid crystal.
Interference filter characteristic synoptic diagram when Figure 11 is double-colored the demonstration.Inventive embodiment
Below based on desirable embodiment the present invention is illustrated.
(the 1st embodiment)
Present embodiment relates to transmission type colour liquid crystal display device.
Fig. 3 shows the section of the liquid crystal display cells of present embodiment.In this figure, the 13rd, the retardation plate of λ/4 slice.The 18th, the interference filter of R transmission, C reflection.The 19th, the interference filter of G transmission, M reflection.The 20th, the interference filter of B transmission, Y reflection.
In the following embodiments, will be described in detail these interference filters.
The basic structure of the liquid crystal display cells of present embodiment is same as shown in Figure 1, and for example the back side of the liquid crystal panel of holding liquid crystal is provided with back light unit between substrate.But different is that each pixel all will form interference filter on the substrate of a side overleaf.And this color filter forms on the transistorized active-matrix substrate of formation TFT, because this had been done narration, so omitted in the drawings.
What play color filter effect shown in Figure 1 is the interference filter with above-mentioned characteristic.And said herein dark blue, dark red, Huang is respectively by green and blue, red and blue, red and green mixing.Also have, can be expressed as for caution's sake, red and dark blue, green and dark red, Lan Yuhuang is respectively complementary color.Because this also is well-known item, just do not done too much explanation.
In addition, employed liquid crystal layer is the twisted nematic structure of 45 degree distortions.Its basis is, under not alive state, liquid crystal layer plays λ/4 slice.And applying under the state of voltage, because of liquid crystal is arranged along direction of an electric field, the effect of this λ/4 slice disappears.And the on-off action (open and close) by electric field shows.
Polaroid 17 is secured on the upside substrate 15, makes its absorption axes parallel with frictional direction.λ/4 slices 11 and polaroid 12 stick on the downside substrate 11 the direction quadrature of the direction of this polaroid and outside polaroid.
According to this structure, liquid crystal cell is common-black type when transmission-type, is normally white when reflection-type.Common-black type herein is under not alive state, becomes the black pattern that shows (light is not mapped to display surface).In addition, normally white is under not alive state, and (light is mapped to display surface to become white demonstration.If colored the demonstration, then the light of this color of pixel is shared in projection.Therefore, be not limited to white demonstration on the colorimetry) pattern.
The below effect of this liquid crystal display cells of explanation.
Fig. 4 represents the effect of transmission-type.Herein, backlight being lighted.Originally illustrate 3 kinds of pixel R, G, B, for this each pixel, as color filter not only respectively transmission R (red), G (green), B (indigo plant), also used the interference of light color filter that reflects other colors.Backlight is white light, but the color filter light of transmission setpoint color not only, also makes a light reflected back side backlight of other colors.And, may also have in the light of this color of returning of being reflected a small amount of not exclusively with the light of the pixel of the light same color of whole display surface reflection, this part light is reflected in back light unit once more, appears on the display surface by the color filter of setting at last.Even be not like that, also can be used to intensification backlight and luminous directly or indirectly.So the loss of light is compared few extraordinarily with the absorption-type color filter.
For example, apply voltage only for the R pixel here, because of liquid crystal layer is normal black, only make to have applied the pixel behind the voltage, promptly the R pixel is by R light.In addition, G, B light are absorbed by the polaroid on surface.So only have R light to pass through, in the RGB look shows, demonstrate " red " look.
Fig. 5 is seen in the effect of reflection-type.At this moment, cancel backlightly, exterior light such as room light are from operator's one side incident.In addition, apply voltage only for the R pixel.
Exterior light is a white.Here, because of the color filter that forms on pixel is an interference filter, so reflect the complementary color light of above-mentioned transmission coloured light.At this moment, the mixed light C (dark blue) of the color filter of R light reflection G and B light.But added voltage on the pixel of R light.At this moment, liquid crystal layer is Chang Bai as the reflection-type element, and the pixel that has therefore applied voltage shows for black.That is, coloured light has been absorbed.
Therefore, reflected light C is polarized sheet 17 absorptions.The mixed light of R and B light), Y (mixed light of Huang: R and G light) on the contrary, for the pixel of G and B light, interference filter reflects M light respectively, and (dark red:, owing to do not apply voltage on these pixels, light is not absorbed in the element of Chang Bai.So this M and Y light are reflected.Therefore, in reflection-type, M and Y are reflected, and because of each pixel is very little, this light is shown as " redness " in the CMY look shows.
In not using reflection-type backlight, compare people with excitation and more pay attention to brightness, so wish to show with the CMY look.Otherwise, in using transmission-type backlight, then wish to show with the RGB look of paying attention to excitation.And, meet very much this requirement in the present embodiment.
Also have, when reality is used, though merged dual mode, even show also very good in this case.
In addition, the liquid crystal indicator of present embodiment is suitable for the hand-held device of portable data assistance and so on, when power supply capacity is sufficient, can light backlightly, can cancel backlight when the battery remaining amount reduces or the minimizing light quantity.Specifically, can be according to brightness of battery capacity and external context etc., reduce voltage backlight or only light 2 in backlight 1.
Have again, in the present embodiment, adopted 45 ° to turn round, be not limited to this pattern certainly with bent twisted nematic liquid crystals pattern.That is to say, also can use vertical orientated liquid crystal or OCB liquid crystal, stn liquid crystal, ferroelectric liquid crystals, ECB liquid crystal etc.
In addition, in the present embodiment, the working copy of liquid crystal layer is normal white mode when reflection-type.When transmission-type normal black pattern, but also can be with it conversely.Need to adjust the stickup angle of polaroid this moment, and insert the time-delay film as required.
In addition, the two can be normal white mode for reflection-type and transmission-type, otherwise, also can be often black pattern.But, under these situations, be opposite negative demonstration during with transmission, so need increase the function that makes video data bear counter-rotating at behaviour in service because of reflex time.
In addition, can add and be independent of pixel drive, make the function of extinguishing backlight this moment in the present embodiment, but also can make it interlock.The basic condition of the circuit structure of this moment as shown in Figure 6.In this figure, the 80th, change-over switch.The 81st, the power switch of sidelight 21.2 82 is the switches that make the display mode counter-rotating.The 83rd, the battery of power supply.The 84th, do not comprise the electricity consumption part of sidelight, as display part (TFT) and keyboard etc.In addition, dotted line is a control signal wire.And, operate change-over switch 80 by the operator, above-mentioned functions is carried out.That is,, the driving voltage of the TFT of display part is taken a turn for the worse along with the lighting and extinguish of sidelight.This figure is schematic diagram eventually, certainly and actual conditions difference more or less.
Reflection-type and transmission-type all use normal white mode to show, drive with model identical as both sides, reversing device shown in Figure 6 etc. just specially do not draw in the drawings yet, and various adjusting gear also become unnecessary, though this is result at the moment, the design of liquid crystal cell has also become simply.But the exterior light of reflection usefulness is mixed when existing with the light of using from transmission backlight, and this is very common in real-world situation, and they are cancelled out each other contrast is descended.That is to say, adopt reciprocal pattern to see it is favourable, as adopt mutual identical pattern to see it is favourable from design aspect from the contrast aspect.
, in the present embodiment, interference filter plays the complementary color effect in transmission-type and reflection-type, that is the effect of performance opposite characteristic, this is noticeable, in addition, by polaroid is set, make being operated in transmission-type and the reflection-type of liquid crystal cell become opposite, this is the work of noncontradictory.Make the loss of light rest on Min. thus, and made bright liquid crystal display cells.
(the 2nd embodiment)
The form of present embodiment is to use the transmission-type of absorption-type color filter and the liquid crystal display cells of reflection-type dual-purpose.Fig. 7 is the sectional view of the liquid crystal indicator of present embodiment.This liquid crystal cell itself is identical with above-mentioned the 1st embodiment, all is provided with backlight overleaf.But following each point difference:
The 1st, on half area of each pixel, reflector plate is set.41 of this figure is exactly the reflector plate that accounts for half area that forms on each pixel lower basal plate 14.
The 2nd, in form the zone of reflector plate 41, formed the absorption-type color filter of C43, M45, Y47 respectively.So-called absorption type color filter is meant the light that has absorbed other colors herein, has specifically absorbed the color filter of complementary color light.
The 3rd, be transmissive portions in the zone that does not form this reflector plate, be provided with the absorption-type color filter of R44, G46, B48.
According to above basic description, the configuration of polaroid 12,17 and retardation plate 13 is identical with the 1st embodiment of front, has realized normal white the demonstration in reflection-type, has realized normal black the demonstration in transmission-type.
Among the embodiment in front, used the liquid crystal cell that carries out phase modulation (PM) that is equivalent to λ/4 slice.At this moment, in reflection-type, pass through liquid crystal layer 2 times, so carried out the modulation of λ/2 altogether because of light.Because of light in transmission-type only passes through 1 time, so can only carry out the modulation of λ/4.Therefore, in reflection-type, as make optimal polaroid configuration, in transmission-type, just can not fully obtain the transmissivity under the pellucidity.For example, if make the retardation plate that the retardation plate of bottom becomes abundant transmissivity, in the black occasion that shows, what understand some transmittance specifically.
So, in the present embodiment, forming the zone of transmission-type and the zone of reflection-type respectively, the box that thickens transmission-type is thick.As it is thick to thicken box, just can correspondingly increase amount of phase modulation.Herein, with the thick 2 μ m that make of box in reflection-type zone, the thick 4 μ m that make of box with the transmission-type zone make amount of phase modulation reach optimization.Thus, no matter be transmission-type, or reflection-type all can obtain best transmissivity and obtain best contrast.
Have again,, in the present embodiment, on the substrate that does not form color filter, form transparent resin 72 in order to form the thick different zone of this box.And on this resin bed, form transparency electrode 42.In addition, this resin bed also can form on colour filtering chip basic board.The thickness of color filter also can be thickeied.
In addition, describe with colored display type in the present embodiment, but also can with the monochromatic type of black and white.Do not need color filter this moment.
Have, the present invention is not limited to the demonstration of phase modulation method again.For example, do not rely in the display mode of phase modulation (PM) in guest-host type demonstration etc., it is thick then to there is no need so to change box.
(the 3rd embodiment)
In the present embodiment, adopted the liquid crystal to the liquid crystal layer vertical orientating type, other parts are identical with above-mentioned the 1st embodiment.Have, corresponding adjustment has been done in the configuration of polaroid and retardation plate again, so that be fit to vertical alignment-type liquid crystal.
As mentioned above, among the 1st embodiment formerly, can not obtain sufficient brightness with transmission-type.The liquid crystal of vertical orientating type is after applying voltage, and the liquid crystal run-off the straight is the device that a kind of double refraction amount increases.Therefore, in transmission-type, when voltage that increase applies, double refraction amount is increased.
In the present embodiment, for the pattern of using as reflection-type, with lower 4V driven.For the pattern of using as transmission-type, as power supply surplus is arranged, available than higher 8V driven, if not, also available 4V driven.Have again, this kind switching also can with the backlight switch interlock, but this also is fine by other operator operation.But this circuit structure etc. are except the open and close switching of sidelight and the height switching of supply voltage etc., and are identical with the demonstration of Fig. 6 basically, and other circuit are also simple.Therefore, only different parts is presented on Fig. 8.In this figure, the 85th, the battery that adds, the 86th, the driving voltage change-over switch of backlight and liquid crystal.By these measures, low in energy consumption and bright in the reflection-type pattern, in transmission-type,,, can become under the best state in brightness and use though power consumption increases according to the power supply situation.
Have, the characteristics of present embodiment are again, can make driving voltage different in reflection-type and transmission-type, and therefore, it all is vertical orientating type that the liquid crystal of use is not limited to certainly.
In addition, power supply needs breakout box, but certain available source power supply etc. needn't all use battery.
(the 4th embodiment)
Present embodiment relates to the interfere type color filter of before using in the 1st embodiment.
The interfere type color filter of present embodiment is the zone that forms different inclinations in order to solve in 1 pixel, because of the different problems that produce change color of direction of observation.
The formation method of the interfere type filter disc of present embodiment below is described.
Behind coating acryl resin on the glass substrate 52, on this acryl resin, form concavo-convex 51 again.Concavo-convex is to adopt etching method to form, but also can adopt pressing.This concavo-convex inclination is to become left-right symmetric to be.Though the symmetry about only expressing on the figure, not only about, with the direction of drawing quadrature on also can form this incline structure.In addition, shape also is not limited to this structure.
Form the interference filter of multilayer film thereon, with vapour deposition method.At this moment, corresponding with each pixel of liquid crystal panel, make R, G, B interference filter of all kinds respectively.
Herein, interference filter is formed obliquely substrate, it is characterized in that: its vergence direction difference in each pixel.Fig. 9 is the schematic diagram of this structure.
For the foregoing reasons, interference light filter also changes because of different its colors in visual angle.But, in the present embodiment, because of the different zone of angle have a plurality of, even each angle the zone in color change, as a complete unit, multiple blend of colors is arranged together, as color filter, its change in color will reduce.
More than be the multilayer film that forms interference filter with vapour deposition method, other also can make the liquid crystal material of the sandwich construction with cholesteryl liquid crystal and so on solidify and make.And on substrate form concavo-convex get final product in order to form a plurality of inclinations on layer this moment.Figure 10 shows this interference filter.(a) of this figure shows the situation of the multilayer film of 1 pixel 4 directions inclinations.Show to (b) principle of this figure the situation that macromolecule 54 solidifies cholesteric liquid crystal molecules 53.
Except that this figure (b), also can make the capsules disperse of cholesteryl liquid crystal after solidifying in macromolecule, become polymer dispersion type liquid crystal, and make it to take place at random in layer direction.
More than based on several embodiment invention is described, but the present invention all is not limited to above embodiment certainly.For example, also following way can be arranged.
1) as shown in figure 11, wavelength is when 5000 left and right sides, and reflectivity and transmissivity sharply change, and adopts 2 kinds of opposite non-absorption-type color filters of characteristic to carry out the demonstration of Lan Hong 2 looks.
2), do not use glass or quartz, and use the resin molding etc. of resin sheet, resin color filter and stacked aluminium as substrate.
Utilize possibility on the industry
By above explanation as can be known, the present invention can make light loss remain in the Min., can be real The reflection-type that now becomes clear and the liquid crystal indicator (element, display part) of transmission-type dual-purpose.
In addition, can show according to the surplus of battery, become the superior liquid crystal display of Portability Device.
By repairing of PCT19 bar
1. (revise afterwards) a kind of back side light source that has, the liquid crystal indicator that the colour of dual-purpose reflection-type and transmission-type shows is characterized in that:
Have corresponding and the absorptive-type color filter of right and wrong with the demonstration form and aspect of each pixel of display surface.
2. (revise afterwards) liquid crystal indicator as claimed in claim 1, it is characterized in that:
Above-mentioned non-absorptive-type color filter is to make the transmittance of setting wavelength and the interfere type color filter that makes its complementary color reflection.
3. (revise afterwards) liquid crystal indicator as claimed in claim 2, it is characterized in that:
Above-mentioned interference type color filter is the interfere type color filter that plays the reflector plate effect when using as reflection-type.
4. (revising the back) as claim 1,2 or 3 described liquid crystal indicators, is characterized in that:
Above-mentioned non-absorption-type color filter or interfere type color filter in addition are to carry out that CMY is colored to be shown when using as reflection-type, carry out when using as transmission-type RGB colored show bring into play the colored color filter that acts on corresponding to type of service.
5. (revising the back) as claim 1,2 or 3 described liquid crystal indicators, is characterized in that:
Above-mentioned liquid crystal indicator has makes the negative inversion set that shows the negative counter-rotating of generation.
6. (revise afterwards) liquid crystal indicator as claimed in claim 5, it is characterized in that:
In any type of reflection-type and transmission-type, the display mode of its liquid crystal is identical, and the display mode of liquid crystal is Chang Bai and Chang Hei, has to make this demonstration that the negative inversion set of negative counter-rotating take place.
7. (revise afterwards) liquid crystal indicator as claimed in claim 5, it is characterized in that having:
The back side light source blanker of turning off the light quantity of above-mentioned back side light source; And
With above-mentioned back side light source blanker interlock and make liquid crystal display that the negative inversion set of light source interlock of negative counter-rotating take place.
8. (revise afterwards) liquid crystal indicator as claimed in claim 6, it is characterized in that:
Back side light source blanker with light quantity of turning off above-mentioned back side light source; And
With above-mentioned back side light source blanker interlock and make liquid crystal display that the negative inversion set of light source interlock of negative counter-rotating take place.
9. (revising the back) as claim 1,2 or 3 described liquid crystal indicators, is characterized in that:
In reflection-type and transmission-type, the display mode of liquid crystal is opposite.
10 (revising the back) liquid crystal indicator as claimed in claim 9 is characterized in that:
Above-mentioned liquid crystal indicator is when using as reflection-type, and liquid crystal is the display mode of Chang Bai, and when using as transmission-type, liquid crystal is normal black display mode.
11. (revising the back) liquid crystal indicator as claimed in claim 9 is characterized in that:
Above-mentioned liquid crystal indicator is when using as transmission-type, and liquid crystal is the display mode of Chang Bai, and when using as reflection-type, liquid crystal is normal black display mode.
12. (revising the back) as claim 1,2 or 3 described liquid crystal indicators, is characterized in that:
Above-mentioned liquid crystal indicator becomes and applies the state that the voltage time passes through when using as reflection-type, when using as transmission-type, becomes and makes the non-state that passes through of light, has the transmittance inversion structures corresponding with these types.
13. (revising the back) as claim 1,2 or 3 described liquid crystal indicators, it is characterized in that: the liquid crystal layer of above-mentioned liquid crystal indicator is a twisted nematic liquid crystals.
14. (revising the back) liquid crystal indicator as claimed in claim 5 is characterized in that:
In above-mentioned liquid crystal indicator, used twisted nematic liquid crystals as liquid crystal.
15. (revising the back) liquid crystal indicator as claimed in claim 9 is characterized in that:
In above-mentioned liquid crystal indicator, used twisted nematic liquid crystals as liquid crystal.
16. (revising the back) liquid crystal indicator as claimed in claim 13 is characterized in that:
Above-mentioned twisted nematic liquid crystals is 45 degree twisted nematic liquid crystals with 45 degree twist angles.
17. (revising the back) as claim 1,2 or 3 described liquid crystal indicators, is characterized in that:
The liquid crystal layer of above-mentioned liquid crystal indicator is a vertical alignment-type liquid crystal.
18. (revising the back) liquid crystal indicator as claimed in claim 5 is characterized in that:
In above-mentioned liquid crystal indicator, used vertical alignment-type liquid crystal as liquid crystal.
19. (revising the back) a kind of its liquid crystal panel is the liquid crystal indicator of transmission-type and reflection-type dual-purpose, it is characterized in that having:
Liquid crystal layer, it is filled in the liquid crystal cell, by means of the modulation of the Control of Voltage light of setting, likens the modulation voltage of using the time to be subjected to as reflection-type in the modulation voltage of using the time to be subjected to as transmission-type and wants big;
Reflection unit when liquid crystal indicator uses as reflection-type, makes from display surface one side incident, light reflection by above-mentioned liquid crystal layer to show; And
Penetrating apparatus when liquid crystal indicator uses as transmission-type, makes from the incident light of the opposing side of the display surface of above-mentioned liquid crystal layer by to show.
20. (revising the back) liquid crystal indicator as claimed in claim 19 is characterized in that:
Its inner filling the liquid crystal cell of above-mentioned liquid crystal layer be to liken the big corresponding type liquid crystal cell of thickness that uses that part of liquid crystal layer that the time passes through as reflection-type at the thickness that uses that part of liquid crystal layer that the time passes through as transmission-type.
21. (revising the back) liquid crystal indicator as claimed in claim 20 is characterized in that:
Above-mentioned liquid crystal indicator can carry out colour and show,
In addition, the corresponding type liquid crystal cell of the above-mentioned type is to use the thickness of that part of liquid crystal layer that the time passes through to liken to reflection-type as transmission-type to use the thickness of that part of liquid crystal layer that the time passes through big for making, and the corresponding type liquid crystal cell that the color filter that makes the corresponding type color filter that color filter thickness changes when using when using as reflection-type and as transmission-type utilizes type has been installed.
22. (revising the back) liquid crystal indicator as claimed in claim 20 is characterized in that:
The corresponding type liquid crystal cell of the above-mentioned type is to use the thickness of that part of liquid crystal layer that the time passes through to liken to reflection-type as transmission-type to use the thickness of that part of liquid crystal layer that the time passes through big for making, when using, become the passage portion of light, have the corresponding type liquid crystal cell that utilizes type for the resin bed of the resin bed of the thickness of reducer crystal layer as reflection-type.
23. (revising the back) liquid crystal indicator as claimed in claim 22 is characterized in that:
Above-mentioned resin bed utilizes the corresponding type liquid crystal cell of type to be, anti-color filter one side that forms resin bed on the substrate that does not form color filter one side forms the corresponding type liquid crystal cell that resin bed utilizes type.
24. (interpolation) liquid crystal indicator as claimed in claim 19 is characterized in that:
Compare when using as reflection-type when using as transmission-type, the reference voltage signal that control is applied makes by the corresponding type voltage signal control device of the modulation voltage increase of above-mentioned liquid crystal layer.
25. (interpolation) is characterized in that as any described liquid crystal indicator in the claim 19,20 or 24:
Above-mentioned liquid crystal layer is a twisted nematic liquid crystals.
26. (interpolation) is characterized in that as any described liquid crystal indicator in the claim 19,20 or 24:
Above-mentioned liquid crystal layer is a vertical alignment-type liquid crystal.
27. (interpolation) liquid crystal indicator as claimed in claim 24 is characterized in that having:
For being used for the back side light source of transmission-type; And
With the corresponding voltage signal control device interlock of the above-mentioned type and make above-mentioned back side light source igniting and the corresponding back side light source control device of the use type that extinguishes etc.
28. (interpolation) a kind of liquid crystal indicator that forms colored demonstration is characterized in that having:
For the colour of utilize interfering show film formed and on each pixel, real estate is the angle compensation type multilayer films interference color filter that a plurality of sub-districts that different angles tilt are formed with multilayer by above-mentioned multilayer film.
29. (interpolation) liquid crystal indicator as claimed in claim 28 is characterized in that:
The multilayer film that the multilayer film of above-mentioned angle compensation type multilayer films interference color filter is to use cholesteryl liquid crystal to form.
30. (interpolation) liquid crystal indicator as claimed in claim 29 is characterized in that:
The multilayer film that uses above-mentioned cholesteryl liquid crystal to form is to use the formed multilayer film of the complex that comprises macromolecule and cholesteryl liquid crystal.
31. the substrate that (interpolation) a kind of liquid crystal indicator that forms colored demonstration is used is characterized in that:
On each pixel on the substrate, formed by utilizing the colour of interfering to show the angle compensation type multilayer films interference color filter that the multilayer film of usefulness constitutes and above-mentioned multilayer film is made of a plurality of sub-districts that real estate are the different angles inclination in each pixel.
About the 1st section of the 19 articles statement of revising
1. the invention particularly relates to the liquid crystal indicator that can use as transmission-type and reflection-type, or the dual-purpose type liquid crystal display that can use as transmission-type and reflection-type of liquid crystal panel.In addition, also to consider pocket.
2. when using as reflection-type, interference filter plays reflector plate.
3. in transmission-type and reflection-type, color inversion, but this shows that by making negative counter-rotating takes place to be solved.
4. in transmission-type and reflection-type, the modulation of the light by liquid crystal layer was exactly different originally, but can use color filter respectively according to the liquid crystal that uses, and optical path length and the control reference voltage of adjusting light in the liquid crystal layer simultaneously solve.
5. to work hard aspect the formation color filter.

Claims (23)

1. colored liquid crystal indicator that shows, it has back side light source, it is characterized in that:
Have corresponding and the absorptive-type color filter of right and wrong with the demonstration form and aspect of each pixel of display surface.
2. liquid crystal indicator as claimed in claim 1 is characterized in that:
Above-mentioned liquid crystal indicator is the dual-purpose type liquid crystal indicator of dual-purpose reflection-type and transmission-type.
3. liquid crystal indicator as claimed in claim 2 is characterized in that:
Above-mentioned liquid crystal indicator has the drive part that can be independent of each pixel and the back side light source regulating device of adjusting the light quantity of above-mentioned back side light source owing to use as reflection-type.
4. as claim 1,2 or 3 described liquid crystal indicators, it is characterized in that:
Above-mentioned non-absorption-type color filter is that transmission is set the light of wavelength and reflected its complementary color interference of light type color filter.
5. as claim 2 or 3 described liquid crystal indicators, it is characterized in that: show that with reflection-type carrying out the CMY look shows, show that with transmission-type carrying out the RGB look shows.
6. liquid crystal indicator as claimed in claim 4 is characterized in that:
Show that with reflection-type carrying out the CMY look shows, show that with transmission-type carrying out the RGB look shows.
7. as claim 2 or 3 described liquid crystal indicators, it is characterized in that:
Above-mentioned liquid crystal indicator has makes the demonstration inversion set that shows negative counter-rotating.
8. liquid crystal indicator as claimed in claim 4 is characterized in that:
Above-mentioned liquid crystal indicator has makes the demonstration inversion set that shows negative counter-rotating.
9. liquid crystal indicator as claimed in claim 5 is characterized in that:
Above-mentioned liquid crystal indicator has makes the demonstration inversion set that shows negative counter-rotating.
10. liquid crystal indicator that can switch transmission-type and reflection-type display mode is characterized in that having:
The liquid crystal layer of light being modulated by means of the voltage signal of setting;
As reflection-type show usefulness, can make from the reflection unit of display surface one side incident and the light reflection by liquid crystal layer;
As transmission-type show usefulness, can make from the light transmissive penetrating apparatus of incident of the opposing side of the display surface of liquid crystal layer; And
In reflection-type display mode and transmission-type display mode, control the voltage signal of above-mentioned setting, make the demonstration voltage signal inversion set of modulation reverse of the light by above-mentioned liquid crystal layer.
11. the liquid crystal indicator that can switch transmission-type and reflection-type display mode is characterized in that having:
The liquid crystal layer of light being modulated by means of the voltage signal of setting;
As reflection-type show usefulness, can make from the reflection unit of display surface one side incident and the light reflection by liquid crystal layer;
As transmission-type show usefulness, can make from the light transmissive penetrating apparatus of incident of the opposing side of the display surface of liquid crystal layer; And
During compared with the transmission-type display mode, control the voltage signal of above-mentioned setting during the reflection-type display mode, make the demonstration voltage signal control device of modulating characteristic enhancing of the light by above-mentioned liquid crystal layer.
12. liquid crystal indicator as claimed in claim 10 is characterized in that:
Filling the liquid crystal cell of above-mentioned liquid crystal layer be, there is the liquid crystal cell of the thick big corresponding thickness type of display mode of the box of the liquid crystal layer part that light passes through in thick the comparing of box that has the liquid crystal layer part that light passes through when using as the reflection-type display mode during as the transmission-type display mode.
13. the liquid crystal indicator that can switch transmission-type and reflection-type display mode is characterized in that having:
The liquid crystal layer of light being modulated by means of the voltage signal of setting;
As reflection-type show usefulness, can make from the reflection unit of display surface one side incident and the light reflection by liquid crystal layer;
As transmission-type show usefulness, can make from the light transmissive penetrating apparatus of incident of the opposing side of the display surface of liquid crystal layer; And
In each of reflection-type display mode and transmission-type display mode, switch the reference voltage value that is applied according to display mode, make the modulation of the light by above-mentioned liquid crystal layer become best modulation voltage switching device respectively corresponding to pattern.
14. liquid crystal indicator as claimed in claim 13 is characterized in that:
Have the back side light source that the transmission-type display mode is used,
Corresponding to the operation of the corresponding modulating of above-mentioned pattern, has the corresponding back side light source switch of display modes such as making above-mentioned back side light source igniting and extinguish with the user of the transmission-type display mode of voltage switching device and reflection display mode etc.
15., it is characterized in that as claim 10,11,12,13 or 14 described liquid crystal indicators:
To each pixel, above-mentioned reflection unit and above-mentioned penetrating apparatus are respectively complementary color type reflection unit and the complementary color type penetrating apparatus that its reflected light and its transmitted light have the complementary color relation.
16., it is characterized in that as claim 10,11,12,13 or 14 described liquid crystal indicators:
Above-mentioned liquid crystal indicator is a colour display device, therefore,
Above-mentioned reflection unit and above-mentioned penetrating apparatus are respectively colored corresponding reflection unit that shows and the colored corresponding penetrating apparatus that shows.
17. liquid crystal indicator as claimed in claim 16 is characterized in that:
Above-mentioned reflection unit and above-mentioned penetrating apparatus be absorptive-type reflection unit of right and wrong and non-absorptive-type penetrating apparatus respectively.
18. liquid crystal indicator as claimed in claim 17 is characterized in that:
Above-mentioned non-absorptive-type reflection unit and non-absorptive-type penetrating apparatus are respectively interference filters.
19. liquid crystal indicator as claimed in claim 18 is characterized in that:
The above-mentioned interference color filter is to form and the surface of multilayer film is the viewing angle compensation type multi-coated interference color filter that is made of a plurality of sub-districts that tilt with different angles to real estate with multilayer film.
20. liquid crystal indicator as claimed in claim 19 is characterized in that:
Above-mentioned multilayer film is the multilayer film made from cholesteryl liquid crystal.
21. a liquid crystal indicator, it uses the interference filter that constitutes with multilayer film as color filter, it is characterized in that:
Above-mentioned multilayer film as the color filter of each pixel is to have its surface to the viewing angle compensation type multilayer film of real estate with a plurality of zones of different angle tilts.
22. liquid crystal indicator as claimed in claim 21 is characterized in that:
Above-mentioned multilayer film is formed by cholesteryl liquid crystal.
23. liquid crystal indicator as claimed in claim 22 is characterized in that:
The multilayer film of above-mentioned cholesteryl liquid crystal forms with the complex of macromolecule and liquid crystal.
CN00806194A 1999-04-13 2000-04-12 Liquid-crystal display Pending CN1347516A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP105183/99 1999-04-13
JP10518399 1999-04-13

Publications (1)

Publication Number Publication Date
CN1347516A true CN1347516A (en) 2002-05-01

Family

ID=14400575

Family Applications (1)

Application Number Title Priority Date Filing Date
CN00806194A Pending CN1347516A (en) 1999-04-13 2000-04-12 Liquid-crystal display

Country Status (5)

Country Link
US (1) US6774963B1 (en)
KR (1) KR20010109333A (en)
CN (1) CN1347516A (en)
TW (1) TW573161B (en)
WO (1) WO2000062120A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296759C (en) * 2003-06-17 2007-01-24 精工爱普生株式会社 Color-filter array and manufacturing method therefor, display device, and projection display device
CN100363806C (en) * 2004-04-28 2008-01-23 精工爱普生株式会社 Display device, and electronic apparatus
CN101923246A (en) * 2009-06-16 2010-12-22 江苏丽恒电子有限公司 Colour liquid crystal display device
CN102112799A (en) * 2008-08-05 2011-06-29 夏普株式会社 Surface light source device
CN102893212A (en) * 2010-03-24 2013-01-23 元博科技有限公司 Reflective display using calibration data for electrostatically maintaining parallel relationship of adjustable-depth cavity components
CN104834126A (en) * 2015-05-27 2015-08-12 武汉华星光电技术有限公司 Liquid crystal display panel and liquid crystal display
CN106990596A (en) * 2017-05-12 2017-07-28 武汉华星光电技术有限公司 Color membrane substrates and liquid crystal display
CN108628025A (en) * 2017-03-20 2018-10-09 京东方科技集团股份有限公司 Color membrane substrates and its manufacturing method, display device
CN108873464A (en) * 2018-08-23 2018-11-23 京东方科技集团股份有限公司 substrate, liquid crystal display panel, liquid crystal display device
CN109613747A (en) * 2019-02-15 2019-04-12 合肥京东方光电科技有限公司 Array substrate for reflective display panel and preparation method thereof and display panel

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7395089B1 (en) 2001-06-11 2008-07-01 Palm, Inc Integrated personal digital assistant device
JP4689900B2 (en) * 2001-08-22 2011-05-25 Ｎｅｃ液晶テクノロジー株式会社 Liquid crystal display
JP3675397B2 (en) * 2001-12-07 2005-07-27 セイコーエプソン株式会社 Reflector, liquid crystal display, electronic equipment
KR100465026B1 (en) * 2001-12-29 2005-01-05 엘지.필립스 엘시디 주식회사 Driving Circuit Of A Transflective Liquid Crystal Display Device
KR100739797B1 (en) * 2006-02-23 2007-07-13 삼성전자주식회사 Display device using a outside light
US20070285403A1 (en) * 2006-06-12 2007-12-13 Shinichi Aota Display apparatus and driving method
EP2233823B1 (en) * 2008-01-23 2018-11-21 Panasonic Intellectual Property Management Co., Ltd. Wavelength separator, planar illumination device and liquid crystal display device using the wavelength separator
CN201178199Y (en) * 2008-03-05 2009-01-07 富士康(昆山)电脑接插件有限公司 Pluggable module group
US7924374B2 (en) * 2008-03-25 2011-04-12 Chih-Neng Chang Color filters for display devices
WO2013059226A1 (en) 2011-10-20 2013-04-25 3M Innovative Properties Company Illumination systems with sloped transmission spectrum front reflector
TWI464461B (en) * 2012-01-20 2014-12-11 Nat Univ Tsing Hua Color filter and edge-type backlight module with the same
US9025112B2 (en) 2012-02-02 2015-05-05 Apple Inc. Display with color mixing prevention structures
US9035932B2 (en) * 2012-08-31 2015-05-19 Apple Inc. Thermally compensated pixels for liquid crystal displays (LCDS)
CN104641282B (en) * 2013-01-25 2017-05-24 Lg化学株式会社 Liquid crystal device
EP3283920B1 (en) * 2015-04-17 2022-10-19 Amel Technology, LLC Transflective liquid crystal display
US11347098B2 (en) * 2015-11-18 2022-05-31 Everix, Inc. Interference filter film for display applications
KR102615067B1 (en) * 2016-12-05 2023-12-19 삼성전자주식회사 Display apparatus
JP6410203B1 (en) * 2017-02-21 2018-10-24 株式会社ナノルクス Solid-state imaging device and imaging apparatus
US11153514B2 (en) * 2017-11-30 2021-10-19 Brillnics Singapore Pte. Ltd. Solid-state imaging device, method for driving solid-state imaging device, and electronic apparatus
CN116113794A (en) * 2020-09-21 2023-05-12 香港科技大学 High contrast ferroelectric liquid crystal cell

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL70116A (en) * 1983-11-02 1987-02-27 Stolov Michael Liquid crystal device for displaying multicolor images
JPS6343123A (en) * 1986-08-08 1988-02-24 Fujitsu Ltd Driving method for liquid crystal display device
US4799050A (en) * 1986-10-23 1989-01-17 Litton Systems Canada Limited Full color liquid crystal display
NL8800951A (en) * 1988-04-13 1989-11-01 Philips Nv DISPLAY DEVICE.
JPH02149881A (en) * 1988-11-30 1990-06-08 Hosiden Electron Co Ltd Color liquid crystal display device
US5267060A (en) * 1990-09-28 1993-11-30 Rockwell International Corporation Reflective color light filter and method of manufacture
JPH05323307A (en) * 1992-05-20 1993-12-07 Shunpei Yamazaki Direct view type display and projection type display
US5739889A (en) * 1993-04-27 1998-04-14 Sharp Kabushiki Kaisha Liquid crystal display device and a production method for the same
US5499126A (en) * 1993-12-02 1996-03-12 Ois Optical Imaging Systems, Inc. Liquid crystal display with patterned retardation films
GB2296807A (en) * 1994-12-29 1996-07-10 Sharp Kk Illumination system
JP3112393B2 (en) * 1995-05-25 2000-11-27 シャープ株式会社 Color display
JP2728059B2 (en) * 1995-10-06 1998-03-18 日本電気株式会社 Reflective liquid crystal display
JPH09258207A (en) 1996-03-19 1997-10-03 Toshiba Corp Color liquid crystal display device
US5841494A (en) * 1996-06-26 1998-11-24 Hall; Dennis R. Transflective LCD utilizing chiral liquid crystal filter/mirrors
JPH10197859A (en) 1997-01-06 1998-07-31 Toshiba Corp Color liquid crystal display device
GB2321717A (en) * 1997-01-31 1998-08-05 Sharp Kk Cholesteric optical filters
EP0989441B1 (en) * 1997-05-09 2008-07-23 Sharp Kabushiki Kaisha Laminated phase plate and liquid crystal display comprising the plate
DE69823452T2 (en) * 1997-05-14 2005-04-14 Seiko Epson Corp. DISPLAY AND ELECTRONIC DEVICE CONTAINING THEREOF
JPH1138397A (en) 1997-07-24 1999-02-12 Sharp Corp Reflection type color liquid crystal display element
JPH11160694A (en) 1997-12-01 1999-06-18 Hitachi Ltd Color liquid crystal panel and projection liquid crystal display device
CN1246931A (en) * 1997-12-04 2000-03-08 平板展示(Fpd)有限公司 Display device
US6295109B1 (en) * 1997-12-26 2001-09-25 Sharp Kabushiki Kaisha LCD with plurality of pixels having reflective and transmissive regions
US6124907A (en) * 1998-04-24 2000-09-26 Ois Optical Imaging Systems, Inc. Liquid crystal display with internal polarizer and method of making same
JP3763678B2 (en) * 1998-09-01 2006-04-05 三菱電機株式会社 Reflective liquid crystal display
TW581918B (en) * 2001-03-07 2004-04-01 Sharp Kk Transmission/reflection type color liquid crystal display device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296759C (en) * 2003-06-17 2007-01-24 精工爱普生株式会社 Color-filter array and manufacturing method therefor, display device, and projection display device
CN100363806C (en) * 2004-04-28 2008-01-23 精工爱普生株式会社 Display device, and electronic apparatus
CN102112799B (en) * 2008-08-05 2013-06-05 夏普株式会社 Surface light source device
CN102112799A (en) * 2008-08-05 2011-06-29 夏普株式会社 Surface light source device
CN101923246A (en) * 2009-06-16 2010-12-22 江苏丽恒电子有限公司 Colour liquid crystal display device
CN101923246B (en) * 2009-06-16 2011-12-28 江苏丽恒电子有限公司 Colored liquid crystal display
CN102893212B (en) * 2010-03-24 2015-09-30 季明 Electrostatic force is regulated to keep the reflected displaying device of cavity depth parallel relation by calibration data
CN102893212A (en) * 2010-03-24 2013-01-23 元博科技有限公司 Reflective display using calibration data for electrostatically maintaining parallel relationship of adjustable-depth cavity components
CN104834126A (en) * 2015-05-27 2015-08-12 武汉华星光电技术有限公司 Liquid crystal display panel and liquid crystal display
US10281762B2 (en) 2015-05-27 2019-05-07 Wuhan China Star Optoelectronics Technology Co., Ltd. Liquid crystal display panel and liquid crystal display device
CN108628025A (en) * 2017-03-20 2018-10-09 京东方科技集团股份有限公司 Color membrane substrates and its manufacturing method, display device
CN106990596A (en) * 2017-05-12 2017-07-28 武汉华星光电技术有限公司 Color membrane substrates and liquid crystal display
CN108873464A (en) * 2018-08-23 2018-11-23 京东方科技集团股份有限公司 substrate, liquid crystal display panel, liquid crystal display device
CN109613747A (en) * 2019-02-15 2019-04-12 合肥京东方光电科技有限公司 Array substrate for reflective display panel and preparation method thereof and display panel
US11307464B2 (en) 2019-02-15 2022-04-19 Hefei Boe Optoelectronics Technology Co., Ltd. Array substrate for reflective display panel, method for preparing the same and display panel
CN109613747B (en) * 2019-02-15 2022-04-29 合肥京东方光电科技有限公司 Array substrate for reflective display panel, preparation method of array substrate and display panel

Also Published As

Publication number Publication date
TW573161B (en) 2004-01-21
KR20010109333A (en) 2001-12-08
WO2000062120A1 (en) 2000-10-19
US6774963B1 (en) 2004-08-10

Similar Documents

Publication Publication Date Title
CN1347516A (en) Liquid-crystal display
EP1014161B1 (en) Reflective liquid crystal display
CN101126853B (en) LCD and electronic device
CN101634773B (en) Display apparatus
CN1145069C (en) Liquid crystal device and electronic device
EP2453299B1 (en) Display device having color filter
CN1702517A (en) Display
WO2000046633A1 (en) Display device, electronic device and light guide
CN1815309A (en) Liquid crystal display and electronic apparatus
CN1138174C (en) Displaying device and electronic device using said device
CN1132050C (en) Display and electronic device equipped with same
TWI304904B (en)
CN1115587C (en) Reflection type liquid crystal display device
US20020180913A1 (en) Reverse reflectance mode direct-view liquid crystal display employing a liquid crystal having a characteristic wavelength in the non-visible spectrum
CN1108392A (en) Liquid crystal display device and a method for fabricating the same
CN107065291A (en) A kind of blast polaroid and its colour liquid crystal display device
CN106646987A (en) Transparent display
JP2004021254A (en) Transmission-reflection switching liquid crystal display
CN1246635A (en) Reflection-type liquid crystal indicator element
CN100338520C (en) Liquid crystal display apparatus
US6833889B2 (en) Cholesteric liquid crystal display device with reflectors and manufacturing method for the same
CN103345016A (en) Light guide plate and manufacturing method thereof, backlight source and transparent display device
CN1729505A (en) Liquid crystal display device with reduced power consumption in standby mode
US7033058B2 (en) Flat display
JP2005031265A (en) Liquid crystal display

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication